A visualizer for Ohua graphs

A small tool to render ohua compiled graphs using graphviz.

Usage

Invoke ohua-show --help see all options and commands. Help for subcommands can be found by runnning ohua-show <subcommand> --help. Be advised that options and arguments listed for ohua-show itself work on all subcommands. Arguments listed tehre should be prepended to the arguments for the subcommands.

The preview subcommand may exit withoput doing anything, I don't know why, perhaps it can't find some program it needs for that. In that case I'd recommend simply rendering to PDF using ohua-show print -f Pdf <input-graph.ohuao>.

To run print with a custom format (as supplied by -f) the graphviz executable must be installed on the system. If no format is supplied the output will be a dot file. This works even if graphviz is not installed.

Installing

Prebuilt binaries are available for 64bit Linux and OSX. Provided for each release by Travis CI.

Simply download the appropriate executable for you platform (ohua-show-linux or ohua-show-osx) from the releases page.

Building from source

Required tools:

• stack https://haskellstack.org

Instructions

1. Clone the repository

   git clone https://github.com/ohua-dev/ohuac

2. Build the program

   stack install

   This downloads and builds all dependencies, as well as the Haskell compiler ghc, should it not be present already. It should not interfere with any system-level libraries, Haskell ecosystems etc.

   It builds the executable ohua-show and copies it to ~/.local/bin. If you do not wish this use stack build instead and find the path of the binary using stack exec -- which ohua-show afterwards